C51 COMPILER V6.12  ZKJP                                                                   05/28/2005 21:42:02 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE ZKJP
OBJECT MODULE PLACED IN .\ZKJP.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\ZKJP.c DEBUG OBJECTEXTEND

stmt level    source

   1          
   2          
   3          #include <reg51.h>
   4          #include <intrins.h>
   5          
   6          unsigned char scan_key();
   7          void proc_key(unsigned char key_v);
   8          void delayms(unsigned char ms);
   9          
  10          sbit	K1 = P1^4;
  11          sbit	K2 = P1^5;
  12          
  13          main()
  14          {
  15   1      	
  16   1      	unsigned char key_s,key_v;
  17   1      	key_v = 0x03;
  18   1      	P0 = 0xfe;
  19   1      	while(1)
  20   1      	{
  21   2      		key_s = scan_key();
  22   2      		if(key_s != key_v)
  23   2      		{
  24   3      			delayms(10);
  25   3      			key_s = scan_key();
  26   3      			if(key_s != key_v)
  27   3      			{	
  28   4      				key_v = key_s;
  29   4      				proc_key(key_v);					
  30   4      			}
  31   3      		}
  32   2      	}	
  33   1      }
  34          
  35          unsigned char scan_key()
  36          {
  37   1      	unsigned char key_s;
  38   1      	key_s = 0x00;
  39   1      	key_s |= K2;
  40   1      	key_s <<= 1;
  41   1      	key_s |= K1;
  42   1      	return key_s;		
  43   1      }
  44          
  45          void proc_key(unsigned char key_v)
  46          {
  47   1      	if((key_v & 0x01) == 0)
  48   1      	{
  49   2      		P0 = _cror_(P0,1);
  50   2      	}
  51   1      	else if((key_v & 0x02) == 0)
  52   1      	{
  53   2      		P0 = _crol_(P0, 1);
  54   2      	}
  55   1      }
C51 COMPILER V6.12  ZKJP                                                                   05/28/2005 21:42:02 PAGE 2   

  56          
  57          void delayms(unsigned char ms)	
  58          // 延時子程序
  59          {						
  60   1      	unsigned char i;
  61   1      	while(ms--)
  62   1      	{
  63   2      		for(i = 0; i < 120; i++);
  64   2      	}
  65   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    115    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)